Reference Manual

14−6
this a very corrosive solution and potentially
erosive due to the percentage of stock content.
Design Considerations
D Highly corrosive chemical (not the same as
chlorine applications)
D Erosive depending on stock consistency and
velocity through valve
D Accurate control needed due to cost for
chlorine dioxide
D Material choice dependent on chemical
concentrations; high concentrations must be
titanium. Hastelloy C (CW2M) can be used.
Typical Specification
Model:
V150 or V300
(V150S with titanium and ceramic trim can also
be used. No liner required.)
Body:
Titanium C3 (R50550) or Hastelloy C (CW2M)
Trim:
Ball: Titanium C3 (R50550) or Hastelloy C
(CW2M)
Seal: TCM Plus
Shaft: Titanium Grade 5 or Hastelloy C
(N10276)
*Pin and Taper Key should also be Titanium or
Hastelloy C
Bearings:
Titanium C3 (R50550) or Hastelloy C (N10276)
lined with PTFE
Packing Box:
ENVIRO-SEAL PTFE
Actuator:
Spring-and-diaphragm
Positioner:
FIELDVUE DVC6200 digital valve controller
with Performance Diagnostics (PD)
The following diagrams are typical valve layouts
for the various bleaching stages.
Chlorine Dioxide (D) Stage
Valve
Tag #
Application
Description
Control
Function
Vee-Ballt
High Pressure
Butterfly Valve
(HPBV)
V150E
1 Medium Consistency (MC) Control T S P
2 Pulp/Chemical Mixing O/O P S (8580)
3 Filtrate Valve O/O P (8580)
4 Bleaching Agent Valve T P
5 Bleached Pulp Valve T P
6 Washed Pulp Valve T P
7 Filtrate Valve O/O P (8580)
8 Filtrate Valve O/O P (8580)
CODE:
P = Primary selection, S = Secondary selection, T = Throttling, O/O = On/Off
Alkaline Extraction (E), Hypochlorite (H), Peroxide (P) and Ozone (Z) Stages
Valve
Tag #
Application
Description
Control
Function
Vee-Ball HPBV V150E
1 MC Control T S P
2 Pulp/Chemical Mixing O/O P S (8580)
3 Filtrate Valve O/O P (8580)
4 Bleaching Agent Valve T P
5 Bleached Pulp Valve T P
6 Washed Pulp Valve T P
7 Filtrate Valve O/O P (8580)
CODE:
P = Primary selection, S = Secondary selection, T = Throttling, O/O = On/Off